Name: restore_spell_points - raise the spell points in a living

Syntax:
	restore_spell_points(int h)

Description:
	The restore_spell_points function raises or reduces the spell points
	in a living depending on the sign of h. The player is not notified
	about this.

	Note: If the living is a normal player, this will be logged.
	
Return value: none

Examples:
	this_player()->restore_spell_points(10);
	this_player()->restore_spell_points(-10);

See also: living/heal_self, living/reduce_hit_point, living/hit_player